Ubuntu – Error mounting ntfs partition at start-up Ubuntu 11.10 – can only be mounted and accessed as root

I started getting the error
"Error mounting partition to /media/Date
Press S to skip mounting this partition or M to manually mount this partition" at startup.

I haven't found any line changed in the fstab file after the error occured.
I have changed "/dev/sda5" with the partition's UUID after the error occured but it didn't help.
This is how the fstab file looks like now:

# /etc/fstab: static file system information.
#
# Use 'blkid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name devices
# that works even if disks are added and removed. See fstab(5).
#
# <file system> <mount point>   <type>  <options> <dump>  <pass>
proc                                       /proc  proc     nodev,noexec,nosuid  0  0
# / was on /dev/sda6 during installation
UUID=2956fd81-0373-4d3d-8fd1-991f2c68b2f3  /      ext4     errors=remount-ro    0  1
# swap was on /dev/sda2 during installation
UUID=265490d1-48c4-40a1-8ddd-df37a44a6ff2  none   swap     sw                   0  0
UUID=0BC8605C581B81ED /media/Date  ntfs-3g  quiet,defaults,rw    0  0

When I try to mount the patition by clicking on it in nautilus I get the error: "Error mounting: mount exited with exit code 1: helper failed with:
mount: only root can mount /dev/sda5 on /media/Date"

It can be mounted through gparted, but i can only acces it as root.